Achievements
Complete each achievement to get the allotted gamerscore:

.45 old school (25) - Perform 45 kills with the M1911 Handgun in Multiplayer.
A one-man riot (25) - Obtain 11,000 points in the Shanghai mission in the Campaign.
Above and beyond the call (25) - Complete all Assignments in the Campaign.
Antediluvian (20) - Complete the Tashgar mission in the Campaign.
Blood wake (20) - Get 30 headshots in the South China Sea mission in the Campaign.
Bomb squad (25) - Deliver 5 bombs in Obliteration.
Braving the storm (20) - Complete the Singapore mission in the Campaign.
Call me "Sir" (50) - Reach rank 25..
Dead by dawn (20) - Complete the Kunlun Mountains mission in the Campaign.
Demolition man (25) - Obtain 15,000 points in the Tashgar mission in the Campaign.
Done some searching (20) - Find 12 collectibles in the Campaign.
Dunn's pride (25) - Obtain 7,000 points in the Baku mission in the Campaign.
Every nook and cranny (20) - Find 21 collectibles in the Campaign.
Fish (20) - Complete the Campaign on Easy.
Fishing in Baku (20) - Complete the Baku mission in the Campaign.
For the cause (20) - Sacrifice Hannah to save the Valkyrie in the Campaign.
For the people (20) - Sacrifice Irish to save the Valkyrie in the Campaign.
For tombstone (20) - Let the Valkyrie be destroyed in the Campaign.
Full arsenal (65) - Unlock all assignments and collectibles in the Campaign.
Gladiator (25) - Obtain 12,000 points in the Kunlun Mountains mission in the Campaign.
Guardian of the fleet (25) - Obtain 6,000 points in the Suez mission in the Campaign.
Guns at dawn (20) - Complete the Suez mission in the Campaign.
Infiltrator (20) - Get 10 adrenaline kills in the Tashgar mission in the Campaign.
It was on the way... (20) - Find 6 collectibles in the Campaign.
Methodical search (20) - Find 15 collectibles in the Campaign.
No stone left unturned (20) - Find 18 collectibles in the Campaign.
Patience is a virtue (20) - Experience all 3 endings in the Campaign.
Recon (65) - Find 28 collectibles in the Campaign.
Shawshank (20) - Get 5 kills with Shank in the Kunlun Mountains mission in the Campaign.
Storm bringer (25) - Obtain 20,000 points in the Singapore mission in the Campaign.
Stumbled over it (20) - Find 3 collectibles in the Campaign.
Terror of the deep (25) - Obtain 11,000 points in the South China Sea mission in the Campaign.
The fall of a Titan (20) - Complete the South China Sea mission in the Campaign.
Tombstone (25) - Complete the Campaign on Hard.
Took a casual look around (20) - Find 9 collectibles in the Campaign.
Turn around... (10) - Perform 5 dog tag kills in Multiplayer.
War turtle (20) - Get 15 kills with RPG in the Singapore mission in the Campaign.
Well placed (20) - Get 10 kills with C4 in the Baku mission in the Campaign.
Wolf (25) - Complete the Campaign on Normal.
Wolves in sheep's clothing (20) - Complete the Shanghai mission in the Campaign.
Won them all (10) - Win a round of each game mode.
Wrecker (20) - Get 10 multi-kills in the Shanghai mission in the Campaign.

Additionally, there are five Second Assault DLC achievements:

Blind Bomber (30) - In a round get 5 kills with air vehicles in Gulf of Oman.
Dirty Job (20) - Find the hidden tunnel in Caspian Border.
Falling Down (20) - Kill an enemy with a ceiling collapse in Operation Metro.
Risky Business (30) - Kill an enemy flag holder while carrying your team's flag in CTF.
Torched (20) - Ignite a brush fire using the repair tool in Operation Metro or Caspian Border.

Additionally, there are five China Rising DLC achievements:

2 Wheels (20) - Get a kill with the Dirtbike.
Death From Above (20) - Get a kill with the bomber.
Fledgling (20) - Play a round of Air Superiority.
Mini Kamikaze (30) - Kill an enemy with the SUAV.
New Superpower (30) - Complete all China Rising Assignments.